title: In vitro demonstration of serological cross-reactivity between Ichthyophthirius multifilis Foquet and Tetrahymena pyriformis Lwoff.
mesh_terms: D000818:Animals; D016798:Ciliophora / Q000276:immunology*; D003429:Cross Reactions; D005455:Fluorescent Antibody Technique; D006386:Hemagglutination Tests; D007103:Immobilization; D013769:Tetrahymena pyriformis / Q000276:immunology*